Home / 15,011.24-20,712.66-9,419.72

Finding the Fourth Proportional to 15,011.24, 20,712.66 and 9,419.72

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Solution

The fourth proportional to 15,011.24, 20,712.66 and 9,419.72 is: 12,997.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.24 : 20,712.66 = 9,419.72 : x
  2. Step 2: Convert to fraction form
    15,011.24/20,712.66 = 9,419.72/x
  3. Step 3: Cross multiply
    15,011.24x = 20,712.66 × 9,419.72
  4. Step 4: Simplify right side
    15,011.24x = 195,107,457.66
  5. Step 5: Solve for x
    x = 195,107,457.66/15,011.24
  6. Step 6: Final answer
    x = 12,997.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.